1868456 has 8 divisors (see below), whose sum is σ = 3503370. Its totient is φ = 934224.

The previous prime is 1868443. The next prime is 1868459. The reversal of 1868456 is 6548681.

It can be written as a sum of positive squares in only one way, i.e., 1865956 + 2500 = 1366^2 + 50^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1868456² = 6982255647872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1868459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116771 + ... + 116786.

2^1868456 is an apocalyptic number.

It is an amenable number.

1868456 is a deficient number, since it is larger than the sum of its proper divisors (1634914).

1868456 is a wasteful number, since it uses less digits than its factorization.

1868456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233563 (or 233559 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 1868456 is about 1366.9147742270. The cubic root of 1868456 is about 123.1669796816.

The spelling of 1868456 in words is "one million, eight hundred sixty-eight thousand, four hundred fifty-six".